Gems Sensor & Control FS-550 Series Flow Switch
Gems Sensor & Control 29608 Flow SwitchLast Updated: 01/11/2018
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Standard FS-550 switches sense liquid flow in either direction to monitor flow/no-flow conditions. They are supplied in two paddle lengths. The paddle is trimmed during installation to permit switch actuation at the desired flow rate. As flow increases in a pipe, the paddle of the switch pivots to move out of the liquid path, producing less than 3 psig (.21 bar) of pressure drop regardless of pipe size.
Using Gems™ Safe-Pak® Relays and Barriers, these switches provide automatic flow / no flow interlock and are intrinsically-safe without explosion-proof housing and piping.
|Primary Material of Construction||Alloy|
|Sensor Type||Paddle Type|
|Flow Setting (GPM)||15.0 – 52.0|
|Body Material||316 Stainless Steel|
|Port Size||1″ NPT Male|
|Switch Type||SPDT (20VA)|
|Set Point Accuracy||±25%|
|Maximum Pressure (PSI)||Over 500|
|Minimum Temperature (°F)||-30|
|Electrical Termination||18 AWG, 24″-26″ Polymeric Leads|
|Set Point Differential||N/A|
|Wetted Materials||316 Stainless Steel, Teflon®, Ceramic|
|Approvals||UL Recognized, CSA, CE, FM|